I was building a mini-shuffleboard game for my kids and wanted to add an abacus score counter to the top edge of the game table. I created the Left and Right mounts and a simple score token. I used a 5mm brass rod as the rail for the score tokens and small 5/8" wood screws to attach the mounts. I will be using 21 score tokens per side and printing them in colors matching the player pucks, but you can use as many score tokens as you need for your game.

Enjoy!